Introducing Java Servlet Container beta.

src/java/nxt_jni_Context.c

@@ -0,0 +1,164 @@
+
+/*
+ * Copyright (C) NGINX, Inc.
+ */
+
+#include <nxt_auto_config.h>
+
+#include <nxt_unit.h>
+#include <jni.h>
+
+#include "nxt_jni.h"
+#include "nxt_jni_Context.h"
+#include "nxt_jni_URLClassLoader.h"
+
+
+static jclass     nxt_java_Context_class;
+static jmethodID  nxt_java_Context_start;
+static jmethodID  nxt_java_Context_service;
+static jmethodID  nxt_java_Context_stop;
+
+static void JNICALL nxt_java_Context_log(JNIEnv *env, jclass cls,
+    jlong ctx_ptr, jstring msg, jint msg_len);
+static void JNICALL nxt_java_Context_trace(JNIEnv *env, jclass cls,
+    jlong ctx_ptr, jstring msg, jint msg_len);
+
+
+int
+nxt_java_initContext(JNIEnv *env, jobject cl)
+{
+    int     res;
+    jclass  cls;
+
+    cls = nxt_java_loadClass(env, cl, "nginx.unit.Context");
+    if (cls == NULL) {
+        nxt_unit_warn(NULL, "nginx.unit.Context not found");
+        return NXT_UNIT_ERROR;
+    }
+
+    nxt_java_Context_class = (*env)->NewGlobalRef(env, cls);
+    (*env)->DeleteLocalRef(env, cls);
+    cls = nxt_java_Context_class;
+
+    nxt_java_Context_start = (*env)->GetStaticMethodID(env, cls, "start",
+                     "(Ljava/lang/String;[Ljava/net/URL;)Lnginx/unit/Context;");
+    if (nxt_java_Context_start == NULL) {
+        nxt_unit_warn(NULL, "nginx.unit.Context.start() not found");
+        goto failed;
+    }
+
+    nxt_java_Context_service = (*env)->GetMethodID(env, cls, "service",
+            "(Lnginx/unit/Request;Lnginx/unit/Response;)V");
+    if (nxt_java_Context_service == NULL) {
+        nxt_unit_warn(NULL, "nginx.unit.Context.service() not found");
+        goto failed;
+    }
+
+    nxt_java_Context_stop = (*env)->GetMethodID(env, cls, "stop", "()V");
+    if (nxt_java_Context_service == NULL) {
+        nxt_unit_warn(NULL, "nginx.unit.Context.stop() not found");
+        goto failed;
+    }
+
+    JNINativeMethod context_methods[] = {
+        { (char *) "log",
+          (char *) "(JLjava/lang/String;I)V",
+          nxt_java_Context_log },
+
+        { (char *) "trace",
+          (char *) "(JLjava/lang/String;I)V",
+          nxt_java_Context_trace },
+
+    };
+
+    res = (*env)->RegisterNatives(env, nxt_java_Context_class,
+                                  context_methods,
+                                  sizeof(context_methods)
+                                      / sizeof(context_methods[0]));
+
+    nxt_unit_debug(NULL, "registered Context methods: %d", res);
+
+    if (res != 0) {
+        nxt_unit_warn(NULL, "registering natives for Context failed");
+        goto failed;
+    }
+
+    return NXT_UNIT_OK;
+
+failed:
+
+    (*env)->DeleteGlobalRef(env, cls);
+    return NXT_UNIT_ERROR;
+}
+
+
+jobject
+nxt_java_startContext(JNIEnv *env, const char *webapp, jobject classpaths)
+{
+    jstring webapp_str;
+
+    webapp_str = (*env)->NewStringUTF(env, webapp);
+    if (webapp_str == NULL) {
+        return NULL;
+    }
+
+    return (*env)->CallStaticObjectMethod(env, nxt_java_Context_class,
+                                          nxt_java_Context_start, webapp_str,
+                                          classpaths);
+}
+
+
+void
+nxt_java_service(JNIEnv *env, jobject ctx, jobject jreq, jobject jresp)
+{
+    (*env)->CallVoidMethod(env, ctx, nxt_java_Context_service, jreq, jresp);
+}
+
+
+void
+nxt_java_stopContext(JNIEnv *env, jobject ctx)
+{
+    (*env)->CallVoidMethod(env, ctx, nxt_java_Context_stop);
+}
+
+
+static void JNICALL
+nxt_java_Context_log(JNIEnv *env, jclass cls, jlong ctx_ptr, jstring msg,
+    jint msg_len)
+{
+    const char      *msg_str;
+    nxt_unit_ctx_t  *ctx;
+
+    ctx = nxt_jlong2ptr(ctx_ptr);
+
+    msg_str = (*env)->GetStringUTFChars(env, msg, NULL);
+    if (msg_str == NULL) {
+        return;
+    }
+
+    nxt_unit_log(ctx, NXT_UNIT_LOG_INFO, "%.*s", msg_len, msg_str);
+
+    (*env)->ReleaseStringUTFChars(env, msg, msg_str);
+}
+
+
+static void JNICALL
+nxt_java_Context_trace(JNIEnv *env, jclass cls, jlong ctx_ptr, jstring msg,
+    jint msg_len)
+{
+#if (NXT_DEBUG)
+    const char      *msg_str;
+    nxt_unit_ctx_t  *ctx;
+
+    ctx = nxt_jlong2ptr(ctx_ptr);
+
+    msg_str = (*env)->GetStringUTFChars(env, msg, NULL);
+    if (msg_str == NULL) {
+        return;
+    }
+
+    nxt_unit_debug(ctx, "%.*s", msg_len, msg_str);
+
+    (*env)->ReleaseStringUTFChars(env, msg, msg_str);
+#endif
+}